我们曾有过灿烂辉煌的汉唐盛世，四大发明更是有口皆碑。

We had a brilliant prosperity of the Han and Tang Dynasties, the four great inventions are legendary.

youdao

我们曾有过灿烂辉煌的汉唐盛世，四大发明更是有口皆碑。

We had a brilliant prosperity of the Han and Tang Dynasties, the four great inventions are legendary.

youdao